7820078 has 16 divisors (see below), whose sum is σ = 13627104. Its totient is φ = 3296160.

The previous prime is 7820063. The next prime is 7820083. The reversal of 7820078 is 8700287.

It is a happy number.

It is a super-2 number, since 2×7820078² = 122307239852168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3725 + ... + 5432.

It is an arithmetic number, because the mean of its divisors is an integer number (851694).

Almost surely, 2^7820078 is an apocalyptic number.

7820078 is a deficient number, since it is larger than the sum of its proper divisors (5807026).

7820078 is a wasteful number, since it uses less digits than its factorization.

7820078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9227.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 7820078 is about 2796.4402371587. The cubic root of 7820078 is about 198.4892671646.

The spelling of 7820078 in words is "seven million, eight hundred twenty thousand, seventy-eight".